Possibly the swiftest route to your roots.
Irish genealogy website directory.
www.theshipslist.com/1847/america.shtml
Description:
The ship Medemseh, from Liverpool, and bound to New York, which lately put into this port for repairs, now lies at Cove, having on board a large number of emigrants chiefly of the lowest order, in the most destitute and debilitated condition. They are almost totally unprovided with clothing, without sufficient provisions, having consumed a great part of their scanty store while out, and scarcely with strength remaining to leave the hold.